攀枝花烟区生石灰施用量与土壤养分及烤烟质量的关系

Relationship Between the Quicklime and Soil Nutrients, Quality of Flue-cured Tobacco in Panzhihua City

为揭示生石灰对攀枝花烟区酸性土壤的改良效果,连续2年通过田间试验研究4种生石灰施用量(450、900、1350、1800 kg/hm2)对土壤养分及烟叶生产的影响,结果表明,在酸性土壤上施用生石灰,不仅对提高土壤p H有明显作用,而且对植烟土壤养分、烤烟产量、产值以及烟叶内在化学成分的变化有明显影响。其中,当生石灰施用量达到1350 kg/hm2的标准时,土壤养分调节效果最显著,烤烟产量、质量均达到最高,烟叶内在化学成分最接近优质烟化学内在指标。

To reveal the effect of quicklime on the in Panzhihua City, Sichuan Province, a two years acid soil which is used for cultivation of flue-cured tobacco continuous field experiment with four different amounts of quicklime, including 450, 900, 1350 and 1800 kg/hm2, were conducted, and the soil nutrition and flue-cured tobacco production traits were monitored. The result showed that the application of quicklime in acid soil could significantly increase the soil pH. Meanwhile, the soil nutrients, flue-cured tobacco yields, flue-cured tobacco economic returns and chemical composition of tobacco leaves were also significantly influenced by using of quicklime. Among the four different amounts of quicklime, the soil nutrients contents, the flue-cured tobacco yields and quality were all reached the highest under the amount of 1350 kg/hm2, furthermore, the chemical components of the flue-cured tobacco leaves were also very similar to those of the high quality tobacco.